October 9, 2015

Modifying Your Smallframe Vespa Ignition

Hi, brothers and sisters Vespa lovers, in this spare time I would like to share my experience in modifying ignition system of my Special 90. The idea to change the ignition from contact system to CDI system is due to ignition problem. Due to of my lack of skill in maintaining the contact system ignition, I found that the contact system not so reliable with my smally. When I was riding my Special 90, suddenly it was stop running. It's happened several times in the middle of my city journey. She lost her electrical, no spark at all.

Finally I decided to try to change the system from contact to CDI. Here is the image of contact system. The main element of contact system consist of Ignition Coil, condenser and contact.

I tried to find out why it's happened. Based on my experience the root cause is inconsistency of contact movement. I pay attention to change contact position step by step and finally spark is on and she runs again. I think to find out to try modification of ignition rather than discussion with others. Then, I'm browsing the webs to find out any alternative which I could do by my self.